Remove unneeded macro usage (#2995)

Co-authored-by: Benjamin Sparks <[email protected]>

examples/serve-with-hyper/src/main.rs

@@ -11,8 +11,6 @@
 //!
 //! [hyper-util]: https://crates.io/crates/hyper-util
 
-#![allow(unreachable_patterns)]
-
 use std::convert::Infallible;
 use std::net::SocketAddr;
 

examples/unix-domain-socket/src/main.rs

@@ -3,8 +3,6 @@
 //! ```not_rust
 //! cargo run -p example-unix-domain-socket
 //! ```
-#![allow(unreachable_patterns)]
-
 #[cfg(unix)]
 #[tokio::main]
 async fn main() {